Merge r6479 into trunk (Revert r6543 and r6441).

This fixes a crash in the code generator.

BUG=1074


Review URL: http://codereview.chromium.org/6383010

git-svn-id: http://v8.googlecode.com/svn/trunk@6481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
10 files changed